I'm the only healthy one in my family

The only one without breast cancer, heart disease, diabetes and Alzheimer's. And more. One sister has had breast cancer twice, and after that siezures from a brain lesion. Another sister has diabetes and heart disease. Breast cancer runs on my mom's side. We were part of the original breast cancer gene studies and the gene is alive and well in our family. I've stayed healthy. If you want help, feel free to ask questions.